cleared debug code
moved interpolate define to prefix
request animframe polyfil moved to prefix
create function wraps element tests
reassign tower
wrapped resize firing
simplified watching window resize
simplified reacting to resize
closured watching window resize
separate element broadcast
factored out broadcast handlers
used instance record of element
manage position listens to drag
refactored manage position
added viewbox for dragging pinching
Merge branch 'compartmentalise'